Put the Duster on the DYNO.

Nice numbers. Sounds like a killer boulevard bruiser. What is the stroke? Haven't seen a stock stroke 440 pull 630 lbs. ft. at 3000 rpm with a cam that big

Is the interior pretty well gutted? If not it ain't gonna be no where near 2450. You have to remove quite a bit to get them down that low, especially with an iron headed big block